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Madan N, Donofrio MT, Szwast A, Moon-Grady AJ, Patel SR. Acute maternal hyperoxygenation protocol: consensus opinion from the Fetal Heart Society. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2024. [PMID: 39206532 DOI: 10.1002/uog.29097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 07/18/2024] [Accepted: 07/19/2024] [Indexed: 09/04/2024]
Affiliation(s)
- N Madan
- Ward Family Heart Center, Children's Mercy Kansas City, Kansas City, MO, USA
| | - M T Donofrio
- Prenatal Cardiology Program, Children's National Hospital, George Washington University School of Medicine, Washington, DC, USA
| | - A Szwast
- The Fetal Heart Program at the Cardiac Center at The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - A J Moon-Grady
- Division of Pediatric Cardiology, Department of Pediatrics, University of California San Francisco, San Francisco, CA, USA
| | - S R Patel
- Division of Pediatric Cardiology, Ann and Robert H Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Patel SR, Michelfelder E. Prenatal Diagnosis of Congenital Heart Disease: The Crucial Role of Perinatal and Delivery Planning. J Cardiovasc Dev Dis 2024; 11:108. [PMID: 38667726 PMCID: PMC11050606 DOI: 10.3390/jcdd11040108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 03/29/2024] [Accepted: 03/29/2024] [Indexed: 04/28/2024] Open
Abstract
Although most congenital heart defects (CHDs) are asymptomatic at birth, certain CHD lesions are at significant risk of severe hemodynamic instability and death if emergent cardiac interventions are not performed in a timely fashion. Therefore, accurate identification of at-risk fetuses and appropriate delivery resource planning according to the degree of anticipated hemodynamic instability is crucial. Fetal echocardiography has increased prenatal CHD detection in recent years due to advancements in ultrasound techniques and improved obstetrical cardiac screening protocols, enabling the prediction of newborns' hemodynamic status. This assessment can guide multidisciplinary resource planning for postnatal care, including selection of delivery site, delivery room management, and transport to a cardiac center based on CHD risk severity. This review will discuss fetal cardiovascular physiology and the circulatory changes that occur at the time of and immediately following birth, outline fetal echocardiographic findings used to risk-stratify newborns with CHDs, and outline principles for neonatal resuscitation and initial transitional care in neonates with these complex CHD lesions.
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Affiliation(s)
- Sheetal R. Patel
- Ann & Robert H Lurie Children’s Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Erik Michelfelder
- Children’s Healthcare of Atlanta, Emory School of Medicine, Emory University, Atlanta, GA 30265, USA
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Holmes H, Saini BS, Moir OJ, Darby JRT, Morrison JL, Sun L, Seed M. Pulmonary Vascular Regulation in the Fetal and Transitional Lung. Clin Perinatol 2024; 51:1-19. [PMID: 38325936 DOI: 10.1016/j.clp.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Fetal lungs have fewer and smaller arteries with higher pulmonary vascular resistance (PVR) than a newborn. As gestation advances, the pulmonary circulation becomes more sensitive to changes in pulmonary arterial oxygen tension, which prepares them for the dramatic drop in PVR and increase in pulmonary blood flow (PBF) that occur when the baby takes its first few breaths of air, thus driving the transition from fetal to postnatal circulation. Dynamic and intricate regulatory mechanisms control PBF throughout development and are essential in supporting gas exchange after birth. Understanding these concepts is crucial given the role the pulmonary vasculature plays in the development of complications with transition, such as in the setting of persistent pulmonary hypertension of the newborn and congenital heart disease. An improved understanding of pulmonary vascular regulation may reveal opportunities for better clinical management.
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Affiliation(s)
- Hannah Holmes
- Division of Cardiology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, M5G 1X8, Canada
| | - Brahmdeep S Saini
- Division of Cardiology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, M5G 1X8, Canada
| | - Olivia J Moir
- Division of Cardiology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, M5G 1X8, Canada
| | - Jack R T Darby
- Early Origins of Adult Health Research Group, University of South Australia, Adelaide, South Australia, 5001, Australia
| | - Janna L Morrison
- Early Origins of Adult Health Research Group, University of South Australia, Adelaide, South Australia, 5001, Australia; Department of Physiology, Faculty of Medicine, University of Toronto, 555 University Avenue, Toronto, Ontario, M5G 1X8 Canada; Translational Medicine Program, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, M5G 1X8 Canada
| | - Liqun Sun
- Division of Cardiology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, M5G 1X8, Canada
| | - Mike Seed
- Division of Cardiology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, M5G 1X8, Canada; Department of Physiology, Faculty of Medicine, University of Toronto, 555 University Avenue, Toronto, Ontario, M5G 1X8 Canada; Translational Medicine Program, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, M5G 1X8 Canada; Research Institute, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, M5G 1X8 Canada; Department of Diagnostic Imaging, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, M5G 1X8 Canada.
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